Banana Chocolate Chip Muffins

My wife has made these a half dozen times since finding the original recipe in a Penzey's spice catalog. I was originally rather dubious about combining bananas and chocolate chips, but these taste great.

I have been making the Penzeys recipe since it was published in their Spring 2003 catalog. The recipe as they published it calls for only 1 cup of banana (about 2), 1/2 cup chocolate chips and no pecans. Since this recipe calls for more banana I can see why you would need to add more flour. These are fantastic muffins. I have also poured the batter into a loaf pan with great success. One change that I have made to the original recipe is that I substitue half wheat flour.